Because this is a public forum, its not that we all don’t want to help, its just that we get cold feet providing advice due to liability and
safety issues. That being said, I think it is very telling that the display is black. If the fans are running and they are 120v, then my suspicion goes back to the
power transformer. All modern transformers have
fuse links built into the windings as a
safety against fires caused by overheating. Unfortunately, sometimes those links open up for no reason.
If the fan motors are low
voltage motors, than I’m thinking logic failure or 5v buss. I though I had a link for the board schematic but for the life of me I can’t find it. It must have been for a different
unit. Someone on this forum is a Chauvet dealer and may be able to
shed some light. I am also remembering something on those about the
unit not initializing until the lamp strikes, but I think in that case you would still have a lit display.